milliard



P- A. HILLIARD MACHINE FDR PREPARING CHOCOLATE FOR CONFECTION COATINGS Dec. 1927. Re. 16,813.

Original Filed May 6, 1925 2 Sheets-Sheet l D, a, 1927. r Re. 16,813

P. A. HILLIARD MACHINE FOR PREPARING CHOCOLATE FOR CONFECTION COATINGS Original Filed May 6, 1925 2 Sheets-Shget 2 mvzuron I 9 4% W W7 attun d Dec. 6, 1927,

'1 1 1 Theiobject of this invention is tousimplify and improve the manufacture of certain arti- 'cle'm or otmfectionery consisting of a center with a layer of semi-liquid which time! becomes sand, notably chocolates and *hohbons ee called;

to tho-mdteiial used as a coating, as ffchoeow lfleg liqtlie iiaderstanding that mean thombytan material that, behaves. n subi-stmtially (some manner as chocolate, and that is to be prepared by the machine 1n which-myjnveatien is embodied. I v I oflerbtadim the preparation of chocolate 8 m bonfebtion coatmgs has required the use ofo 'aiplurality of separate containers, with the handling iilcidental to the transfer of chocolate fromdne container to another. In the-machine of, m invention only one container is employe and the heat sup- Plifli'iilfl automatically regulated so that the operatorFdoesnot haveto guess at the degree manner, avoids liability of either exces- 1 ti? or'yinsufi'ciently heating, and s enguhl totlettve the machine toperform its neiionufor ajconsidei'able time withoutthe i of the operator. a in further advantage of my improved machine isth saving of theoperatora time, in because no hand stirring of the chocolate 1s utfluiredytht machine bei adaptedto con- ;tihuiousliy and automatical y stir the; choco- Bf theia'ocompanying drawings forming a aw re of this specification, f V a Figure, lie :1 .perspectiveview of a mathine eifibodyin'g the invention;

'" ,sui'yl" arid 1 are sectional views,

MIL clinch-hereaifter described.

ii-Figure ehowanglportions of the mechanism cooper- ":itin t ewith. a t

*r F gule 2 is a fragmentary sectlon on line 6 12 -2 ofFigiire 2. I

",FFrgum 3 shows in section parts intersected why" the'lin 3-3 of Figure 2, the lever por- "tfllt blide thereon, being shown in elevation. Fig'lfrtsA, 5, B and 7 are fragmentar- Wst showing details hereinafter describe 8 shows in elevation a twin maeameaiti which theinvention may be ema owners STATES ii? iihnt'ny a. shaman, be wersasremnassrcnosares.

enema-ms oiroconh'rn FOR ooitrno'rron coA'rInos.

ne motels-m2, and February 23, 1926-,Serial Ho; 25,530, filed in a; 1925-.

' reissueflled Dent-fiber 27,

ajfiritLWWnililcir I, will hereinafter refer 11g" di firent adjustments of the gas Qfs atop, plan view of the kettle,

- d m oftlre rod, hereinafter described, and

ea re-nr orrlce;

A'p'plication for 1926-. Serial No; 157,391. l t

The same reference characters, indicate the same parts in all of thefigilres. v

In the drawings, 12 designates a cylindrical kettle, fixed to and rotated by a shaft 13,

coaxial with the kettle, andsupported in an inclined position by a lower step bearing 14, on the base portion of, a supporting frame 15, and an upper bearing 16, fixedto an upbase, and a torquetransmitting connection.

between the motor shaft 19 and the kettle t,

shaft; 1 v I, 4

Figure 1 shows a suitable embodiment of said connection, including a bevel gear 20, fixed to the kettle shaft, and a pulley wheel 21, fixedto the motor shaft, the intermediate members of the connection I being so clearly shown that further description is unetfi fl w e a e Within the kettle is a fixed partitio n. or divider 22, supported by arms 23- and 24, attached -to opposite'ends fthe divider by fasteners 25. The arm 23 is attached by fasteners 26, to the frame upright 17 and the arm 24 by fasteners 27,- to another rarne upright 28. The divider 22 separates the kettle into two compartments 29, 30 which are adapted respectively to hold the solid and the melted chocolate. Thekettle being' mounted onan inclined axis as; shown, the

solid chocolate compartment is preferably 'ai'rfinged to be located at the upper side of the-kettle,theconipartment having the pool of melted chocolate being at the lower side.

The, ends and the loweredge of ,the divider are in close proximity to the surfaces of the wall and bottom of the kettle. H r

The end 'edgeand" portion of the bottoin edge of thedivider 22 which are adjacent to the portions of the inner surface of the re- ,tating kettle moving from the compartment 29 to the compartment 30 aregspaced there fronias by crevicesfil', 31* (Figures 2, 2). The end edge and portion of the bottom edge Of the divider which are adjacent to the surfaces of the kettle moving from the compart- Inent-30 to the compartment 29 are in scraping contact withfsaid surfaces, As a result of this construction, the movingsurface ,of the kettle coming in contact w th the sold chocolate is coated'with chocolate melted on the surface of the lumps or chunks in the compartment 29, and carries the coating-of melted chocolate through the crevices 31, 31 to the compartment 30 where the coating is a blended into the. pool of melted chocolate therein. .The inner surface of the kettle as it leaves the compartment 30 is scraped by the edges of the partition 22 so that it is substantially free of chocolate-when it again rubs over the chunks of solid chocolate in the compartment 29.

The kettle may be heated by any suitable I means such for example as the Bunsen burnver' illustrated'. The heat from the'heating" unit is intehdedto be applied in such a way as to melt the solid chocolate directly to the desired consistency for dipping and to main- 'tainthe meltedchocolate constantly at that,

consistency; provide automatic -heat-controlling mechanism for so regulating the heating 'fiat'ne as' to maintain the melted chocolate at a substantially uniform predetermined viscosity, said mechanism being caused by excessive stifl'ness of the melted body 34 to increase the heat, and by excessive fluidity V of said body to decrease the heat.

A preferred embodiment of said mechanism will now be described. 36 designates a blade fixed to an end portion 37 of a bent lever or rod. The opposite end portion 38 of said rod is journaled to turn in a fixed bearing 40. The blade is located in the lower compartment 30 and is immersed, when the machine is in operation,

' in the melted body 34, as shown by Figure 3. To the intermediate or lever portion 39 Y of the rod-is secured one end of a cable 41,

' the other endof which is secured to a disk 42. The disk ismounted to turn on a horizontal arm 43, fixed to the frame upright 28.

To the periphery of the disk 42 is secured F at 44,.1a cable 45, supporting a weight 46, *having a tendency to turn the disk in the directlon of the arrow y. The disk is provided with a radially projecting arm 47, connected by a cable 49 with an arm 50,

fixed to the stem 51 of the plug member of ordinary gas cook, the casing 52 of which is shown by Figure 1,'s aid cock being in a pipe line 53, whlch supplies gas to the burner 1 35. A. weight 54 suspended from another arm 55, fixed to the plug stem, is adapted to turn the plug member toward its closed position. a The disk 42 is provided with a latterally projecting stud 57, which bears against the shorterarm of a lever 58,-mounted to swing:

V on the arm 43. On the longer arm of the 9' level 58 is a weight 59, which has a tendency I a 'jtopress the shorter arm ofthe lever against {the stud 57, and 'thus turn the disk 42' in f the" direction of the arrow y.

Within the lump-rece ving compartment I 29 is up swinging gat'e 60, connected at one I means.

fa'cable 66, passing over a loose pulley 67,

journaled on an arm 68, which is fixed to .the arm 43. The cable 66 is 'fixed to an ear 69 on the weight 59.

22, and with the gate 60, tends to swing the gate to the right from the position shown "in the guide 40.

To confine the disk 42 against rotation, for a purpose hereinafter described, when the blade 36 is raised, I provide a brake adapted to bear frictionally on one side of the disk, and brake-operating means actu ated toapply the brake when the blade is raised, and to release the brake, when the blade is depressed. V

The said brake and operating means, as here shown, includes a bent rod, having an end portion 71 (Figures 1, 6 'and7), movablein a slot in the upri ht 28, into and out of contact with the dis 42, an'uprightportion 72, journaled in a fixed bearing 73, a spring 74, fixed at one end to the bearing, and at its other end to the portion 72, and

aninclined curved portion 75, fixed to the portion 72. I

The end portion 71 constitutes the brake, and the portions 572 and 75, and the-spring 74 constitute the elements of the operating Another element of said means is a bent rod 77, havin at one end a the rod being thus adapted to sw1n vertically. The opposite end of the ro 77 is connected by'a hinge 79 (Figure 1) with A spring 70, connected with the divider be raised from the ketotted lines in Figure 3,

intle 78, journaled in a sodket in the uprig 't 28,

a collar 80, fixed to the lever-arm journal 38. The arrangement is such that when the blade 36 is depressed, the rod 77 bears on the lower end of the inclined portion 75, as shown by Figure 7, and holds the brake 71 out of contact with thedisk 42. WVhen the blade israised, the rod 77 is swung. upward above the inclined portion 75, as shown by Figure 6, whereupon the spring 74 acts to turn the upright portion 72in its bearing, and thus press the brake 71 against the'disk.

The kettle is provided with an annular flange 82,. joined by a neck 83 with the upper edge of the kettle, and projecting downward below the bottom of the kettle. yThe from. the kettle welt 15y th utet. hit hpeee h t. The lt'ittet pertieh of "thetiange reintegt htitt't e teeth; t'thieh te eive'e het eittt eiti thbf )2 es: the ehihthtthihetee with the thtliilti epltte 84, its ehhwii by Figure 3. An i th'u prkivided which ensures h) 'i' h ti & of the ehhe'elate iii the kettle hi y of m eihhatin'g and booking it) tifi nl''. I

" bgeihtilli the lhahin, a charge of 3 ifiEiTtiCd iii the higher eehi ht-tt giflllii H the! *t'tlthtlt'etth. If the ehee- ;eltte' i eflet he's emit ed,- the tehtedthhfet- 6th" eill'e ett White at gi eylehepete. et efheeh blitti' he the h ating, This 4 i i teilttlhlty Hebe, b'v the e etetet by t l 2 sf H Ila,

i t e "tehe repeated aftei the @112 W sitthh ntiihh'tt of pie'eee, s9 that stiiii-ihg i's' teqtih eat The etli-rihg eeh i'l'fiitiiis'fil eetse h hehed hy a he i '1 a the in aktittibnitiy kettle, but it .t i v it tt'hd' iiieenven'ieh t6 dip eeitteih 1h ele ehhthiheu-ih a e tle lnwhic il ft ttgtdlthti" hh ltl le' dHtt-hts the kettle. 1 fiffifih hditetlthft tiniiig and avoid yilebriiteet'ltl to til hhetrit 'etettiiettle, by eh. i: i the It tie, the providing it wi h the mine?" hg tthtl other, ttl tihete, ee tieeet hetl. The ih a new ht the ttle tetl chbclilate t ofihttliitl 'v etite it, eiltl the aivltl'er h evides "g heat-e which i pttietiehlly unobi-ihqi hd lltet the tipi at'tii" lies free tlhotiet't ttlttetthtettee th the i'nltd 'eheeelete when i pp n "tfdt1 a! the vie'ethih lifit'tila't with the'iiievifii eiitteee' of the kttl iii the thhi eitiiieht 3 i tlh t'lh a time (it eheeelete which ethiitgflflfiy tilij" the tithes; The lewet and biiter 9 tie at? eeehite ete'e'ttrietl with the inevet the ettl t iitil the eitittei "fiiffi e22; is encountered when the lower fle iietd upwardly and the miter The upward current causes i e S t iirfittz' at the peel ti-tth pi s 05 a ia 1 (if the liin'lpst the centers therein. The skiti frictm' of heat and when lumps of it are heated in e 'eehtaiiiei for the per the of meltin H161. the sti'rftt'e lflyi (if t le i'uinp s'b'fteh iiitu tl piflfitic ensistiifihywhicii iiiel'ts -i'dfi- 1y, is toe tiiik to be ferhbvfl' frdtii the ltii't'lp by ortliiiitt' stihtiiig tit the mates, and delays the phetii-utoli 'of hht t6 the hhid enteis Unless" the tentttiher is heated in i1 poiiit iv'ell above. the fneltiflg' oint, 01' the Chocolate, the melting et the ht'm e ie it Vefy fsloiw B15iatioii iiii olving 'dtihidei'fihlb ik ttst'e of time and heat. .For this reason; it h'ti bn trilioihs't'ifir to heat the 'ehoetsittte to a teihbffitfiie 'wlellhbtive' its melting potit in 'order to melt the lumps Within a i'ilSdIiehle tiit e, thei tts (F661 the melted iibcbiate td phiiit heatthe" heiidit iti tem leratuir'e tthieh ithethe Cbii'sist iicy 'n'i'tliiiarily dest'red for dipping 'f-htei's. This? is custtmit'tidly tltiii by heating! the tiilflc'tjititj in one kettle tb ihelt it. theii ti'hnsfer fing it he tithe'r kettles to (total, the dipping being ddhe t'iltel" th'e "c'iiohdihte Pitts been art ally c'obld. Tli'e tempe'rtttttiie of th'e'putltiiee ih whihh the eeiithte are dipped lh maintained by tret ient 'ttddifionsof taper-heated cheeblate from the melting kettle. Bf? my invention, I avoid the eeeee ity ht euet h'eetlh the ehocblate by removing vf'tc'iin he' siiiface of the lamps the 'soft'litid 0i melted ho'c'cfl ate as fast is it is melted. This' is 'shpp'iid t the eel tit melted eheeehtte elt the eeiteet temperat'uie arid CpIiS'istEhey :lIlti maintained in the same cmitilitibil in the po'oi. y

In the Upr'titidil hf the machine the 'cii'o'cniate in th hifihi' cbinptrtm'e'rit 29 of the kettle is melted where the lamps '01? 011060- late dome iii edht'aibt with the moving heated Suff'as 6f thfkettle. Since the heat which is heed to melt the eheehtte is ebiidllcted thee-eta threh h the while of the tetetiiig kettle, rtteti'ettll' all of the heat is thus ep- 7 blied dire'etly to the surfaces ot the chow lsl't lumpe which are iii 'con'taet with the is a very poor conductor of heat, the actual melting necessarily takes place almost ex clusively on the warmed inner surfaces of I the kettle and the surface layers of the chocolate in contact with the kettle walls are continuously scraped off and carried by the latteras fast as they are -softawaly one by the heat therefrom. The softened the crevices 31, 31

this being called the first position.

chocolate'scraped from the lumps by the moving kettle walls forms a temporary coating thereon which is carried at once through to the pool in the compartment 30 and blended with the melted chocolate in the pool. The walls of the kettle being heated to the proper degree to maintain the pool of chocolate at the correct consistency, the chocolate as melted from the lumps will be raised directly to that. consistency and not first overheated, then cooled, as has been the custom heretofore. r

The heating of the kettle has been usually accomplished heretofore, by means of a water jacket, in order to avoid danger of overheating, but as water even in small quantities, will spoil chocolate if mixed with it, I dispense with the use of water and use hot air as the heating medium. In doing, this rising from the burner 35 inside the de- I merely catch the column of hot air pending flange 82, which is open at the bottom and closed at the top by the kettle. This hot air bath uniformly heats all portions of the kettle, without overheating any portion thereof. 7 Y In starting the operation of the machine, the gas cock is fully opened, as shown by Figure 1' by a movement of the disk 42 from the position shown by Figures 1 and 4, to that shown by Figure 5. 1 This movement of the disk exerts a pull on the cable 49, and causes :the latter to open the gas be thus turned by hand, or .it may be turned by the pull of the weight 46, the brake 71 being manually separated from the disk to permit the weight to act. I

The disk 42, when turned to cause the full opening'of the gas cock, shown by Figure 1",'acts through the cable 41 to move the lever 39 and blade 36 to the left hand position shown .in dotted lines by Figure 2, The blade is thus adapted to be acted on. .as described later, by melted chocolate in the. lower compartment 30, the space vin the upper compartment at one side of theswinging gate 60, being charged with lumps .33. I

wait until the chocolate i-ssufliciently melted to permit the rotation of the kettle. and then start the motor.

(It is possible to leave the gas Jburning over night, sothat the motor may be started immediately in the morning.) The gas remains fully turned l by providing means for shortening and on whilethe melted chocolate accumulates in the lower compartment 30, and rises into 'contactwith the blade 36..

The rotation of the kettle causes a circulation of the melted chocolate, as indicated by the arrows in Figure 2. The melted chocolate isnow in a condition of greater fluidity than that desirable for the formation of a suitable coating. Thecontact of the moving chocolate with. the blade 36, when the latteris in thefirst position, causes a movement of the blade and the lever 39 from first position to the central position shown by dotted lines in Figure 2, which I call the second position, the lever arm 39 being correspondingly moved and causing movement .of the disk 42, to the position shown by Figure 4, thus partly closingthe gas cock, as'shown by Figure 1".

Further rotation of the disk 42, and movement of the blade 36, is prevented by the engagementof the stud or pin 57 'with'the pendulum 58, the resistance thus ofl'ered being .suflicient to preventthe reopening of the gas cock.

As the gas is now turned low, the heat generated by the burner is decreased and the melted chocolateis rapidly cooled to the desired condition of viscosity by the natural dissipation or radiation of the heat, and the absorption of heat .by the melting of the chocolate in the higher compartment 29.

As the melted chocolate is cooled to the desired dipping temperature, the increase of its'viscosity causes it to exert more force on i by Figure 2, this being called the third position. This added pull overcomes the V V resistance of pendulum 58. until the pendu cock through the arm 50. The disk'42 may 1 um is swungouttothe left as viewed in Figure 4. y the turning of the disk42rthis movement of the pendulum causing a slight increasein the opening of the gas cock. as shown by Figure 1. and a corresponding increase of heat. When the'lever 39 and the blade are in the third position. the chocolate is in proper condition for dipping.

'As the resistance of the pendulum 58 is variable, in accord with its angular distance from the vertical. a state of equilibrium is reached, with varying degrees of viscosity of the chocolate. i

As already explained. I provide means of further varying the resistance. of the pendulumby sliding the weight 59 up and down thereon, in accord with the quantity of unmelted chocolate lumps in, compartment 60. i

W it Tug he t nne t n betwe n the weetti am 1 the at T e at 3? 4 1 '6 W' l h tatt e we, a e 1 wx flfi t tge We ht e;1 ,tebel by me, m 94; pp to wh eh it may b WW? @uevmwepean of han regulet' ea fitt iek tt W th he eut me i wegn ttq i k ll fetgthe tbecele et e 11, 21 th t at; 1 s e e t .1 wise to 131 tl ggqel ute w t e th ek o tht bttg t 1 t W 1 me a o epmpen et s, fer.

er fif te t heat. mthedwmn teem,

ma t. dehemem ter e t ll flit 56 4 .52 net-mtg y eep nswe to cha ges T; ly te AW ,t e m l e thet letet t 'inq t tlety f. m d ehee ltte L w-Yet thener; an hengesvtn he "i T it, '19; mt lted e otelate mith t .er ,aw Pempg, he tow l qpf t wtti of; 4 Watts, .f1$ .1 1 t et the. k ttle mll en ite tfl at e ubt tptte ly v e, .tt ,t ee e theepe ie rete toe a .t the fl'ttdeend 1A thus afiett PT meet he t s, ,tie ergb dcemt, tttgtab t k ttl v e FY16? fi ed with sa d k tt e'enip el- 11;, 1?; the paq W t n he kettl B ut ity oil qmnpartm ttet eetd g ptct i at tim en; y #1 la h s nner su ieqe of til d. a g in s repin entae et t I With etd n r QWEABQ- (a R re, oi th c s ies. feed q ze r i ,e ttieer eewber e d a. p itt'ep fia 2 mm; m hin gtid t qxztez ter M 1331 14% t 1. teem. er W412 0.7 A? f lig gly epee d h m hef er T, fi tieth; tfieite tem m mb a e 1. the

. fin r 1 he ee xe 1 meet wlth te d at mett e or z fia'inef m bar, and means for rgtatmg 01 g 'Qf ggidgpgnbgrs gelafiv'ely Q0 the othega' W3, 1 fiaratusior prqpaping solid chocolate text." lg Q e t Q ry eente -t em e eg tp; we ttm g h e h t ee te 1X1 fl i with a eur ete mo ing Rtetiveb t 0 me s f r t: usin relative niotion t t sq .215 ee i hsei t eee; end m et? er sta t i Sitid sus ee at e eext te ith t M j t flth uqlet titplt e ue t clas d s be temj pxt qifig re g ahle eqn t ner t ye i itien mg 125mm fiRSQd egemst tettqtt there t fmt, 41M TI- g e spa e ,nthteatime: mt! a ,v it?! its? l gtfiti ttt .tee twtment meets atte- P t i:

1 it mi tenee th aplg etus i s. @9 2- f 2f heattng, mean e tttmllmg being FQSPOQSIVQ to chggggg in a ea ing said Icone dmeens pera i und .ttetma Apper tu for Preperm e lld th t ttt fer c e mg onf t aet Qent te, w n h tentp ztiges a, rgt ggg bie con t gtner pgrtltlfim mega; hg herem W1 aga nst rq h -Fi tiglivi ing the space With nsaid ente lt eu We a Cgmpartment for solid chqgzolatp qal lfld 1g, mm tme t ie melted. hoee iete, a

2 ftltm meep er bel e pee ti tegl' with" it? c ge 1n gcgg; mg qqrttacj f 5th h l l lflli 5%?!- f tente tte meting. q .ete compartm nt t9 the mt edf she t.

ii l i elete e mp rtment and S .etet ile}. the; I w me i t em thesd eheteiette eQmEe t-men" to th melt d ch eeltttt empe tmentt meets t r .retet ng eeite e t n mett 02 he t pg. aid tente'iiqennd mete eee ttive mde xi mel tpet m eendifi 9 38. Q? the eppe etue to ent said heath mett e ee tl tenttel in means being-ms 9 ,s ye' 19 tcth n e ie on i ney of the ehqeel te' i th mel ed ehq ete @IPBW F ment. v 1 Apgtw tue to P epar ng 119 h t l e 9! 9% 'een t en y 'e nt e, h t. e9 iQP 9$" t te e conta e 'e ipert tiq mem e eelt ene n s d. nt iner anti xed me tet en here th Said it ifi m ding he spac With n h 5 te to e eznpertm xits fo 1i 1- e9! it f eeq e e r p e ly, said pet iee h ving t n 1 se ping with the inn 'atrf te i f he to e 1% e9 1- te tex which pt ftem he m lte o lete ee llg tftm nt t6. he Solid ehe elet e mpmmez and i gaeedirem the ur aeee Whi'h five; t e $9 121 thetelet tempartmsn Q t e m ltedfehot ltte .9 4 .1ee ttt e itt mett e ffi i fQ fi iygfit d eente nert me ns l eatm gth -tezi titer, and means epe et tve unfie e,...;.me, t ttdi 'wn at e e e ien o he a PQIfl IE tei entrq tid" e n e'e na q ttqfi ng m ans e r ep ve t 9 Qhfi$ in, th censiwgen y Ie the, me ted 9 3Q Qfi1 d hitI g 1 he qnatztlw Qi 'sohd the olet n the ee ta T- A hee eter n g t machin 9. 3 p eixtgfl r f v ,ette'he jn an inclined mane to: et g th kett e, mett $9. mtetteg t e k t end a fixed d vi er s bv ding the kettle nt e h gher and 4 lette t mper mee th div der n t ertteq n s d o the is. frem t e. s ttle, t that e ted hece a e may be c ied irem'the T i he; t h lower} t ertmeet, mtl i qn e t with the ket le a eq .90- s e sid of the xistee. hat m l ed Q1196 lat is p v'ente. fr m retu ning t the h he c mpartment t ad ite e m' t ellv st $124, the tow eqmpeltment ei e fepted ie Ben ett t e 11 .pin e en er themm eqlttatt A ehetq tere; fi ng m h e eem- .Ie l ving 5 anda lower} compartment andadapt to compartment, a

heating gas burner below the kettle, a fixed divider subdividing the kettle into a higher automatically to close the cock, and means for varying the opening of the cock and thereby regulating the burner flame.

' A'fi'chocolate-preparing machine com- .ply of gas to prising a rotary kettle having an inclined axis, meals for rotating the kettle, a kettle heatinggasburner below the kettle, a fixed divider subdividing the kettle into a bi her a'nda lowercompartment and adapte to permit melted chocolate to be carried from the higher .to the lower compartment and prevent return of the chocolate to the higher compartment,,'a as cock governing the sup-* 51c burner, means tending automatically to close the cock, and means for varying the. opening of the cock and thereby .regula'ting'the burner flame, said means including an oscillatable blade movable in and by an accumulation of melted chocolate in the lower compartment, and Y connections between said blade and the cook.

10, Archocolate-pre aring machine comrotary kett e having an inclined axis, meansffor rotating'the kettle, a kettleheating gas burner below the kettle, a fixed glividelflsubdividilig the kettle into a hi her permit melted chocolate to. be carried from the hi her to the lower compartment and preven return of the chocolate to the higher compartment, :1 as cock governing the sup-t ply of gas to t e burner, means tending automatically to close the cock, and means for varying the openin of the cock and thereby regulating the urner flame, said means including a disk adapted to turn on an axis adjacent to thekettle, constantly acting means tending to' turn the disk in one direction, :a cable connectin the disk with the plug member of the coc an oscillatory lever having a 'blade which is movable in and by an accumulation of meltedchocolate inthe lower compartment, and a cable connegtin the leverwith thedisk.

ILJA chocolater e aring machine comprising a rotary kett ehaving an inclined axis, means for rotating the kettle, a kettle heating-gas burner below thekettle, a. fixed divider subdividing the kettle into a higher to and a lower compartment and ,adapte permit melted chocolate to be carried from the highertov the lowercompartment and prevent return of thechocolate'to the higher compartment, agas cock governing the sup- :P y 40f I gas to the burner, means tending automatically to close the cock, and means for varying the opening of the cock and thereby regulating the burner flame, said means including a disk adapted to turn on a support adjacent to the kettle, a cable connectln the disk with the plug member of the coax, an oscillatory lever having a blade which is movable in and by anaccumulation of melted chocolate in the lower compartment, va cable connecting the lever with the disk, and a pendulum oscillatable on the axis ofthe disk, and having a longerar'm, a weight on said arm, and a shorter arm contacting with a stud on the disk,"the weight being adjustable on the pendulum. j 12. A chocolate-preparing machine comprising a rotary kettle having an inclined axis, means for rotating the kettle,'a kettleheating gas burner below the kettle, a fixed divider subdividing the kettle into a hi her and a lower compartment and adapte to permitmelted chocolate to be carried from the higher to the lower compartment and prevent return of the chocolate to the higher compartment, a gas cock governing the supply of gas to the burner, means tending automatically to close the cock, and means vfor varying the opening of the cock and thereby regulating the burner flame, 'said means including-a disk adapted to turn on an axis adjacent to thekettle, constantly acting means tending to turn the disk inone direction, a cable connectin the disk with the plug member of the coc an oscillatory lever having a blade which is'movable in and by an accomulation of melted chocolate in the lower compartment, and a cable connecting. the lever with the disk, the lever and bladebeing movable into and out of the kettle, abrake adapted to contact with and prevent movement of the disk, and brakeoperating means movableby a movement of the lever and blade in one direction to a ply the brake and prevent rotation of t e disk, and by a movement of the lever and blade in the o osite direction to se arate Pg P heating gas burner below the kettle, a fixed divider subdividing the kettle into a hi her and a lower compartment and adapte to" permit melted chocolate to be carried from the'higher to the lower compartment and prevent return ofthe chocolate to the higher compartment, a gas cock governing the supply of gas to the burner, means tending'automatically to close the cock, and means for ed chocolate in the lower compartment, 2.

.varyingthe opening of the cock and thereby 'regulatlng the burner flame, said means including a disk adapted to turn on a support cable connectin Q a weighted pend of the disk, and having a shorter arm contacting with a stud on the disk, the weight jso the lever with the disk, and ulum oscillatable on the axis being adjustable on the pendulum, the machine comprising also a gate hinged to the divider and pressed by a spring against an accumulation of unmelted chocolate in. the higher compartment, and a cable connecti a capstan on the gate with ab e weight on the pendulum.

the adj ust- 14. A chocolate-preparing machine as specified by claim 13, the said adjustable weight bein provided with manually operable means or varying the length of the connection between the weight and the capstan.

15. Apparatus for pre aring solid chocolate for coating con ectionery centers,

which comprises a rotatable container, a

partition member therein fixed against rotation therewith dividing the space within said container into a compartment for 1 solid chocolate and a compartment for melted chocolate, said partition member being positioned with its edge in scraping contact with the inner surface of the rotating container moving from the melted chocolate compartment to the solid chocolate compartment and spaced from the surface moving from the solid chocolate compartment to the melted chocolate compartment, means for rotating said container, and means for heatin said container.

16. pparatusof the class described, comrising a member having an element of surace, means for heating said surface to a temperature above the melting point of chocolate, means for bringing said element of surface into and out of contact with solid chocolate whereby a film of melted chocolate is acquired by said surface, and means for subsequently removing said film from said surface and keeping said melted chocolate 7 separate from the unmelted.

In testimony whereof, I have afiixed my signature.

PERLEY A. HILLIARD. 

